Clouds and Precipitation      By: Justin Haines
Adiabatic Temperature Changes and             Expansion and Cooling    • When Air is Heated it expands and becomes      le...
Orographic Lifting    • Is when air masses rise over a mountain      range.    • When it rises it cools to the point where...
Frontal Wedging    • When warm air and cold air collide at the      surface, or front.http://wiki.answers.com/Q/What_is_fr...
Convergence    • A region in the atmosphere where two      prevailing flows meet and interact resulting in      distinct w...
Localized Convective Lifting    • Is the warm convection air rising over a      particular local area.http://answers.yahoo...
Stability (Density Differences &              Stability and Daily Weather)    • Condensation that happens when the air    ...
Condensation    • Water that collects as droplets on a cold surface      when humid air is in contact with it.http://www.k...
Types of Clouds    • Cirrus clouds: Are high, white, and thing. They      can occur as patches or as sheets or extended   ...
High Clouds    • High clouds are usually ranging from about      16,500 and 45,000 ft in latitudes.    • Clouds at this le...
Middle Clouds    • Clouds at the altitude between 6,500 and      23,000 ft.    • These clouds are Altocumulus, altostratus...
Low Clouds    • Lower level clouds are clouds at the lower      levels of the atmosphere these clouds usually      reflect...
Clouds Of Vertical Development    • These clouds are clouds that aren’t classified      by any three of the scales    • Su...
Fog    • Fog is a low level cloud at ground level    • Fog is created by radiation cooling    • Fog is defined as a cloud ...
Cold Cloud Precipitation (Bergeron                      process)    • When cold clouds of the upper atmosphere      form p...
Warm Cloud Precipitation (Collision-             coalescene process)    • In many places in the world it’s too warm for   ...
Rain and Snow    • Rain and Snow are both types of precipitation    • The type of precipitation that hits Earth      depen...
Sleet, Glaze, and Hail    • Sleet, Glaze, and Hail are all types of      precpitation.    • The type of precipitation that...
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3JHaines

  1. 1. Clouds and Precipitation By: Justin Haines
  2. 2. Adiabatic Temperature Changes and Expansion and Cooling • When Air is Heated it expands and becomes less dense. • For the molecules to spread out they need energy as they do they become less agitated. • When air cools down it falls to the surface of the earth more pressure is added causing them to heat up.http://www.kidsgeo.com/geography-for-kids/0070-adiabatic-temperature-changes.phphttp://www.kidsgeo.com/images/adiabatic.jpg
  3. 3. Orographic Lifting • Is when air masses rise over a mountain range. • When it rises it cools to the point where condensation takes place and precipitation is common.http://en.wikipedia.org/wiki/Orographic_lifthttp://upload.wikimedia.org/wikipedia/commons/b/b2/Orographic_lifting_of_the_air_-_NOAA.jpg
  4. 4. Frontal Wedging • When warm air and cold air collide at the surface, or front.http://wiki.answers.com/Q/What_is_frontal_wedginghttp://www.wou.edu/las/physci/taylor/gs106/atm2_precip_files/slide0004_image043.jpg
  5. 5. Convergence • A region in the atmosphere where two prevailing flows meet and interact resulting in distinct weather conditions.http://en.wikipedia.org/wiki/Convergence_zonehttp://upload.wikimedia.org/wikipedia/commons/1/12/IntertropicalConvergenceZone-EO.jpg
  6. 6. Localized Convective Lifting • Is the warm convection air rising over a particular local area.http://answers.yahoo.com/question/index?qid=20090504182240AAIVfQ3http://www.richhoffmanclass.com/images/chapter4/seabreeze.gif
  7. 7. Stability (Density Differences & Stability and Daily Weather) • Condensation that happens when the air temperature actually increases with the height of a temperature inversion.http://shoalwater.nsw.gov.au/Education/images/water%20cycle/condensation_main.jpg
  8. 8. Condensation • Water that collects as droplets on a cold surface when humid air is in contact with it.http://www.kidsgeo.com/geography-for-kids/0107-condensation.phphttp://www.weatherquestions.com/condensation.gif
  9. 9. Types of Clouds • Cirrus clouds: Are high, white, and thing. They can occur as patches or as sheets or extended fibers that have a feathery look. • Cumulus Clouds: Rounded masses. Usually have a flat base and look like towers. • Stratus Clouds: They look like sheets or layers that cover much or the whole sky.Bookhttp://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/CirrusField-color.jpg/300px-CirrusField-color.jpg
  10. 10. High Clouds • High clouds are usually ranging from about 16,500 and 45,000 ft in latitudes. • Clouds at this level are cirrus, cirrocumulus, and cirrostratushttp://forecast.weather.gov/glossary.php?word=high%20cloudshttp://upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Cirrocumulus_Clouds_July_2010.jpg/300px-Cirrocumulus_Clouds_July_2010.jpg
  11. 11. Middle Clouds • Clouds at the altitude between 6,500 and 23,000 ft. • These clouds are Altocumulus, altostratus, and nimbostratushttp://forecast.weather.gov/glossary.php?word=Middle+cloudshttp://upload.wikimedia.org/wikipedia/commons/thumb/1/13/Altocumulus.jpg/300px-Altocumulus.jpg
  12. 12. Low Clouds • Lower level clouds are clouds at the lower levels of the atmosphere these clouds usually reflect lower levels of light creating low contrast. • Lower level clouds: cumulus, stratocumulus and stratus.http://australiasevereweather.com/techniques/moreadv/class.htm#1http://cloudappreciationsociety.org/collecting/wp-content/uploads/2008/12/11stratocumuluslowtideantoniofeci.jpg
  13. 13. Clouds Of Vertical Development • These clouds are clouds that aren’t classified by any three of the scales • Such clouds are fog which is a cloud which is at ground level.Bookhttp://outofthefog.net/images/fogjpg014.jpg
  14. 14. Fog • Fog is a low level cloud at ground level • Fog is created by radiation cooling • Fog is defined as a cloud with it’s base near the ground.Bookhttp://www.uh.edu/engines/fog9.jpg
  15. 15. Cold Cloud Precipitation (Bergeron process) • When cold clouds of the upper atmosphere form precipitation from ice crystal growth.http://en.wikipedia.org/wiki/Bergeron_processhttp://www.geo.hunter.cuny.edu/~tbw/wc.notes/5.cond.precip/precipitation/bergeron.process.jpg
  16. 16. Warm Cloud Precipitation (Collision- coalescene process) • In many places in the world it’s too warm for ice crystals to form therefore rain and snow can’t develop. • Instead rain turns into large droplets of water.http://www.kidsgeo.com/geography-for-kids/0113-collision-coalescence.phphttp://apollo.lsc.vsc.edu/~wintelsw/MET1010LOL/chapter07/drop_cloud_ccn.gif
  17. 17. Rain and Snow • Rain and Snow are both types of precipitation • The type of precipitation that hits Earth depends on the temperature in the lower atmosphere. • Snow is due to cold atmospheric weather.Bookhttp://www.picturesofwinter.net/snowoncabins.jpg
  18. 18. Sleet, Glaze, and Hail • Sleet, Glaze, and Hail are all types of precpitation. • The type of precipitation that hits Earth depends on the temperature in the lower atmosphere. • These types are due to cold atmospheric weather.Bookhttp://www.erh.noaa.gov/cae/svrwx/nsslhail3.jpg

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